How severe is CVE-2016-5020?

CVE-2016-5020 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2016-5020 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (88th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2016-5020?

CVE-2016-5020 primarily affects F5 Big-ip Wan Optimization Manager. In total, 139 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2016-5020?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2016-5020 published?

CVE-2016-5020 was published on 2016-06-30 and last updated on 2026-06-17.

CVE-2016-5020

CVE-2016-5020 is a high-severity vulnerability in F5 Big-ip Wan Optimization Manager with a CVSS 3.x base score of 8.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-264.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 9.0
EPSS exploit prediction: 3% (88th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-264
Affected product: F5 Big-ip Wan Optimization Manager
Published: 2016-06-30
Last modified: 2026-06-17

Description

F5 BIG-IP before 12.0.0 HF3 allows remote authenticated users to modify the account configuration of users with the Resource Administration role and gain privilege via a crafted external Extended Application Verification (EAV) monitor script.

Frequently asked questions

What is CVE-2016-5020?: F5 BIG-IP before 12.0.0 HF3 allows remote authenticated users to modify the account configuration of users with the Resource Administration role and gain privilege via a crafted external Extended Application Verification (EAV) monitor script.
How severe is CVE-2016-5020?: CVE-2016-5020 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2016-5020 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (88th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2016-5020?: CVE-2016-5020 primarily affects F5 Big-ip Wan Optimization Manager. In total, 139 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2016-5020?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2016-5020 published?: CVE-2016-5020 was published on 2016-06-30 and last updated on 2026-06-17.

References

Affected products (139)

cpe:2.3:a:f5:big-ip_wan_optimization_manager:10.2.1:*:*:*:*:*:*:*
cpe:2.3:a:f5:big-ip_wan_optimization_manager:10.2.2:*:*:*:*:*:*:*
cpe:2.3:a:f5:big-ip_wan_optimization_manager:10.2.3:*:*:*:*:*:*:*
cpe:2.3:a:f5:big-ip_wan_optimization_manager:10.2.4:*:*:*:*:*:*:*
cpe:2.3:a:f5:big-ip_wan_optimization_manager:11.2.1:*:*:*:*:*:*:*
cpe:2.3:a:f5:big-ip_protocol_security_module:10.2.1:*:*:*:*:*:*:*
cpe:2.3:a:f5:big-ip_protocol_security_module:10.2.2:*:*:*:*:*:*:*
cpe:2.3:a:f5:big-ip_protocol_security_module:10.2.3:*:*:*:*:*:*:*
cpe:2.3:a:f5:big-ip_protocol_security_module:10.2.4:*:*:*:*:*:*:*
cpe:2.3:a:f5:big-ip_protocol_security_module:11.4.0:*:*:*:*:*:*:*
cpe:2.3:a:f5:big-ip_protocol_security_module:11.4.1:*:*:*:*:*:*:*
cpe:2.3:a:f5:big-ip_application_acceleration_manager:11.4.0:*:*:*:*:*:*:*
cpe:2.3:a:f5:big-ip_application_acceleration_manager:11.4.1:*:*:*:*:*:*:*
cpe:2.3:a:f5:big-ip_application_acceleration_manager:11.5.0:*:*:*:*:*:*:*
cpe:2.3:a:f5:big-ip_application_acceleration_manager:11.5.1:*:*:*:*:*:*:*
cpe:2.3:a:f5:big-ip_application_acceleration_manager:11.5.2:*:*:*:*:*:*:*
cpe:2.3:a:f5:big-ip_application_acceleration_manager:11.5.3:*:*:*:*:*:*:*
cpe:2.3:a:f5:big-ip_application_acceleration_manager:11.5.4:*:*:*:*:*:*:*
cpe:2.3:a:f5:big-ip_application_acceleration_manager:11.6.0:*:*:*:*:*:*:*
cpe:2.3:a:f5:big-ip_application_acceleration_manager:11.6.1:*:*:*:*:*:*:*
cpe:2.3:a:f5:big-ip_application_acceleration_manager:12.0.0:*:*:*:*:*:*:*
cpe:2.3:a:f5:big-ip_application_acceleration_manager:12.1.0:*:*:*:*:*:*:*
cpe:2.3:a:f5:big-ip_edge_gateway:10.2.1:*:*:*:*:*:*:*
cpe:2.3:a:f5:big-ip_edge_gateway:10.2.2:*:*:*:*:*:*:*
cpe:2.3:a:f5:big-ip_edge_gateway:10.2.3:*:*:*:*:*:*:*
cpe:2.3:a:f5:big-ip_edge_gateway:10.2.4:*:*:*:*:*:*:*
cpe:2.3:a:f5:big-ip_edge_gateway:11.2.1:*:*:*:*:*:*:*
cpe:2.3:a:f5:big-ip_webaccelerator:10.2.1:*:*:*:*:*:*:*
cpe:2.3:a:f5:big-ip_webaccelerator:10.2.2:*:*:*:*:*:*:*
cpe:2.3:a:f5:big-ip_webaccelerator:10.2.3:*:*:*:*:*:*:*
cpe:2.3:a:f5:big-ip_webaccelerator:10.2.4:*:*:*:*:*:*:*
cpe:2.3:a:f5:big-ip_webaccelerator:11.2.1:*:*:*:*:*:*:*
cpe:2.3:a:f5:big-ip_domain_name_system:12.0.0:*:*:*:*:*:*:*
cpe:2.3:a:f5:big-ip_access_policy_manager:11.6.0:*:*:*:*:*:*:*
cpe:2.3:a:f5:big-ip_analytics:11.2.1:*:*:*:*:*:*:*
cpe:2.3:a:f5:big-ip_analytics:11.4.0:*:*:*:*:*:*:*
cpe:2.3:a:f5:big-ip_analytics:11.4.1:*:*:*:*:*:*:*
cpe:2.3:a:f5:big-ip_analytics:11.5.0:*:*:*:*:*:*:*
cpe:2.3:a:f5:big-ip_analytics:11.5.1:*:*:*:*:*:*:*
cpe:2.3:a:f5:big-ip_analytics:11.5.2:*:*:*:*:*:*:*

More vulnerabilities in F5 Big-ip Wan Optimization Manager

CVE-2016-5022 — Critical (CVSS 9.8): F5 BIG-IP LTM, Analytics, APM, ASM, and Link Controller 11.2.x before 11.2.1 HF16, 11.3.x, 11.4.x, 11.5.x before 11.5.4…
CVE-2014-7169 — Critical (CVSS 9.8): GNU Bash through 4.3 bash43-025 processes trailing strings after certain malformed function definitions in the values…
CVE-2014-6271 — Critical (CVSS 9.8): GNU Bash through 4.3 processes trailing strings after function definitions in the values of environment variables,…
CVE-2014-2927 — Critical (CVSS 9.3): The rsync daemon in F5 BIG-IP 11.6 before 11.6.0, 11.5.1 before HF3, 11.5.0 before HF4, 11.4.1 before HF4, 11.4.0…
CVE-2013-0150 — Critical (CVSS 9.3): Directory traversal vulnerability in an unspecified signed Java applet in the client-side components in F5 BIG-IP APM…
CVE-2011-3188 — Critical (CVSS 9.1): The (1) IPv4 and (2) IPv6 implementations in the Linux kernel before 3.1 use a modified MD4 algorithm to generate…

All CVEs affecting F5 Big-ip Wan Optimization Manager →

Other CWE-264 (Permissions, Privileges, and Access Controls) vulnerabilities

CVE-2016-8363 — Critical (CVSS 10.0): An issue was discovered in Moxa OnCell OnCellG3470A-LTE, AWK-1131A/3131A/4131A Series, AWK-3191 Series, AWK-5232/6232…
CVE-2016-7457 — Critical (CVSS 10.0): VMware vRealize Operations (aka vROps) 6.x before 6.4.0 allows remote authenticated users to gain privileges, or halt…
CVE-2015-7425 — Critical (CVSS 10.0): The Data Protection component in the VMware vSphere GUI in IBM Tivoli Storage Manager for Virtual Environments: Data…
CVE-2015-8267 — Critical (CVSS 10.0): The PasswordReset.Controllers.ResetController.ChangePasswordIndex method in PasswordReset.dll in Dovestones AD Self…
CVE-2015-7919 — Critical (CVSS 10.0): SearchBlox 8.3 before 8.3.1 allows remote attackers to write to the config file, and consequently cause a denial of…
CVE-2015-7071 — Critical (CVSS 10.0): The File Bookmark component in Apple OS X before 10.11.2 allows attackers to bypass a sandbox protection mechanism for…

Browse all CWE-264 (Permissions, Privileges, and Access Controls) vulnerabilities →